Mastic dispensing gun



FIG. 1 is a side elevation of a mastic dispensing gun according to the present invention;

FIG. 2 is a plan view of the mastic dispensing gun shown in FIG. 1;

FIG. 3 is an elevation, taken from the other side, of the mastic dispensing gun shown in FIG. 1;

FIG. 4 is a front elevation of the mastic dispensing gun shown in FIG. 1; and

FIG. 5 is a rear elevation of the mastic dispensing gun shown in FIG. 1. 

The ornamental design for a mastic dispensing gun, as shown in the drawings. 